diff --git a/htdocs/api/class/api.class.php b/htdocs/api/class/api.class.php
index cd3f86d23fd..d856da56456 100644
--- a/htdocs/api/class/api.class.php
+++ b/htdocs/api/class/api.class.php
@@ -253,17 +253,6 @@ class DolibarrApi
 		unset($object->stats_mrptoconsume);
 		unset($object->stats_mrptoproduce);
 
-		unset($object->origin_object);
-		unset($object->origin);
-		unset($object->element);
-		unset($object->element_for_permission);
-		unset($object->fk_element);
-		unset($object->table_element);
-		unset($object->table_element_line);
-		unset($object->class_element_line);
-		unset($object->picto);
-		unset($object->linked_objects);
-
 		unset($object->fieldsforcombobox);
 		unset($object->regeximgext);
 
@@ -290,10 +279,21 @@ class DolibarrApi
 
 		unset($object->prefix_comm);
 
-		if (!isset($object->table_element) || $object->table_element != 'ticket') {
+		if (!isset($object->table_element) || ! in_array($object->table_element, array('expensereport_det', 'ticket'))) {
 			unset($object->comments);
 		}
 
+		unset($object->origin_object);
+		unset($object->origin);
+		unset($object->element);
+		unset($object->element_for_permission);
+		unset($object->fk_element);
+		unset($object->table_element);
+		unset($object->table_element_line);
+		unset($object->class_element_line);
+		unset($object->picto);
+		unset($object->linked_objects);
+
 		// Remove the $oldcopy property because it is not supported by the JSON
 		// encoder. The following error is generated when trying to serialize
 		// it: "Error encoding/decoding JSON: Type is not supported"